The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
12 Days of Christmas in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 81st JayXon 🇺🇸 926 436 177ms 24 Apr 2022 82nd JayXon 🇺🇸 926 438 500ms 16 May 2022 83rd JayXon 🇺🇸 926 441 2,634ms 24 Nov 2024 84th tomtheisen 🇺🇸 926 449 412ms 12 Dec 2022 85th stefangimmillaro 926 468 116ms 10 Aug 2023 86th m-tkach 🇺🇦 926 494 2ms 22 Oct 2024 87th primo-ppcg 🇹🇭 925 453 40ms 28 Jun 2022 88th jared-hughes 924 404 7ms 12 Nov 2023 89th MeWhenI 🇻🇦 924 434 618ms 15 Feb 2023 89th ovs-code 🇩🇪 924 434 491ms 10 May 2024 91st duckyluuk 🇳🇱 923 420 406ms 3 Jul 2025 91st pardouin 🇫🇷 923 420 507ms 5 Feb 2026 93rd Feniske 🇫🇷 923 422 228ms 23 Oct 2023 94th prplz 🇦🇺 923 435 10ms 5 Oct 2020 94th Attero 🇸🇪 923 435 11ms 22 Oct 2020 94th Irratix 🇳🇱 923 435 10ms 16 May 2022 94th idavidka 🇭🇺 923 435 10ms 18 May 2023 98th JayXon 🇺🇸 923 448 135ms 25 Dec 2023 99th JayXon 🇺🇸 923 450 1,252ms 17 May 2022 100th Waffle3z 923 462 1ms 3 Feb 2021 101st lynn 923 468 130ms 1 Sep 2021 101st HPWiz 🇳🇿 923 468 116ms 3 Sep 2021 103rd stackofbears 922 407 34ms 27 Dec 2023 104th Steffan153 🇫🇮 922 412 61ms 21 days ago 105th primo-ppcg 🇹🇭 922 438 4ms 2 May 2023 106th JayXon 🇺🇸 922 443 2ms 8 Oct 2022 107th MeWhenI 🇻🇦 922 470 118ms 8 Mar 2023 108th juliansiebert 🇩🇪 921 423 284ms 18 Dec 2023 109th nwellnhof 🇩🇪 921 433 4ms 23 Oct 2024 110th MeWhenI 🇻🇦 921 467 303ms 7 Jun 2023 110th GrayJoKing 🇦🇺 921 467 316ms 1 Aug 2023 110th prestosilver 🇺🇸 921 467 421ms 2 Feb 2026 113th radarek 🇵🇱 920 413 35ms 18 Jul 2024 113th beirigo 🇧🇷 920 413 35ms 26 Jul 2024 115th JayXon 🇺🇸 920 504 25ms 27 Jul 2023 115th m-tkach 🇺🇦 920 504 57ms 30 Aug 2023 117th EklipZgit 919 424 213ms 9 Jun 2020 117th sean-niemann 🇺🇸 919 424 270ms 10 Sep 2022 117th cosminlof 🇷🇴 919 424 239ms 28 Nov 2022 117th KevinMarquette 🇺🇸 919 424 240ms 24 Apr 2023 117th ndren 919 424 275ms 26 Aug 2023 117th snoozingnewt 🇨🇦 919 424 272ms 20 Nov 2023 117th corbob 🇨🇦 919 424 278ms 21 Apr 2024 124th error256 919 428 854ms 15 Jun 2024 125th primo-ppcg 🇹🇭 919 439 156ms 19 Jun 2021 126th primo-ppcg 🇹🇭 919 452 420ms 21 Nov 2021 126th WilliamDeBlieck 919 452 74ms 26 days ago 128th MWI-polygolf 919 468 310ms 6 Dec 2023 129th ovs-code 🇩🇪 919 470 126ms 22 Sep 2024 130th Steffan153 🇫🇮 918 422 471ms 2 Sep 2024 130th ovs-code 🇩🇪 918 422 434ms 22 Sep 2024 132nd GrayJoKing 🇦🇺 918 423 3ms 18 Aug 2024 133rd MeWhenI 🇻🇦 918 424 7ms 31 Dec 2024 134th primo-ppcg 🇹🇭 918 431 4ms 3 Jul 2023 135th Shanethegamer 🇺🇸 918 469 395ms 11 Mar 2022 136th KevinLaux 917 425 240ms 2 Nov 2022 136th mrbell-dev 917 425 277ms 12 Jan 2025 138th pardouin 🇫🇷 916 415 33ms 23 Aug 2025 139th sean-niemann 🇺🇸 916 423 461ms 11 Nov 2025 140th GrayJoKing 🇦🇺 916 441 4ms 5 Jun 2021 141st sean-niemann 🇺🇸 916 465 1ms 24 Feb 2025 142nd destofr 916 470 308ms 30 Dec 2022 143rd rucin93 🇵🇱 915 419 156ms 28 Oct 2024 144th SirBogman 🇺🇸 915 426 271ms 14 Jun 2024 145th sean-niemann 🇺🇸 915 472 119ms 1 Jul 2022 145th Steffan153 🇫🇮 915 472 121ms 19 Aug 2024 147th BlankSpruce 915 492 300ms 24 Nov 2024 148th m-tkach 🇺🇦 915 499 26ms 29 Sep 2023 149th Shanethegamer 🇺🇸 914 425 5ms 19 Apr 2025 150th tomtheisen 🇺🇸 914 439 10ms 29 Oct 2020 151st IanUtley 914 481 18ms 28 Mar 2024 152nd andersk 🇺🇸 914 494 209ms 22 Oct 2022 153rd sean-niemann 🇺🇸 913 420 153ms 28 Oct 2024 154th dcgjb 913 427 438ms 13 May 2024 155th inventshah 913 437 2ms 11 Sep 2023 156th edsrzf 🇳🇿 912 438 759ms 15 days ago 157th sean-niemann 🇺🇸 912 472 317ms 10 Nov 2023 158th JayXon 🇺🇸 911 421 151ms 31 Oct 2024 159th Alex-x90 🇺🇸 911 457 2ms 26 Jul 2023 160th primo-ppcg 🇹🇭 911 496 204ms 14 Jan 2022 First Prev 81–160 of 4,083 Next Last
